210020020002120 has 64 divisors (see below), whose sum is σ = 632073031557120. Its totient is φ = 55826407862784.

The previous prime is 210020020002029. The next prime is 210020020002157. The reversal of 210020020002120 is 21200020020012.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 210020020002096 and 210020020002105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2795756104 + ... + 2795831223.

It is an arithmetic number, because the mean of its divisors is an integer number (9876141118080).

Almost surely, 2^{210020020002120} is an apocalyptic number.

210020020002120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210020020002120 is an abundant number, since it is smaller than the sum of its proper divisors (422053011555000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210020020002120 is a wasteful number, since it uses less digits than its factorization.

210020020002120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5591587654 (or 5591587650 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 210020020002120 its reverse (21200020020012), we get a palindrome (231220040022132).

The spelling of 210020020002120 in words is "two hundred ten trillion, twenty billion, twenty million, two thousand, one hundred twenty".